超高速冲压喷气发动机引擎在飞机超过音速的情况下不能启动。

Scramjets engines can not start until the plane flies faster than the speed of sound.

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在大约时速200英里时他将启动为火箭发动机传送htp的泵。

At about 200mph he will start the pump to deliver the HTP into the rocket.

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我们在启动主发动机。

We have main engine start.

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我们在启动主发动机。

We have main engine start.

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